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#1 2021-01-24 18:03:39
- Gdr-
- Member
- Registered: 2021-01-24
- Posts: 2
[Solved] Absurdly high memory usage on a base install
Is it normal for the memory usage to be around ~240MB on a fresh install in the tty ? The packages being used were simply
base base-devel linux linux-firmware grub efibootmgr nanoThe only services enabled manually are
systemd-networkd systemd-resolvedfree -m :
total used free shared buff/cache available
Mem: 15987 236 15316 2 435 15475
top (sorted by mem%) :
top - 17:46:05 up 34 min, 2 users, load average: 0.00, 0.03, 0.02
Tasks: 224 total, 1 running, 223 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 15987.7 total, 15314.9 free, 237.2 used, 435.6 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 15474.8 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
295 root 20 0 48788 15580 14616 S 0.0 0.1 0:00.09 systemd-journal
370 systemd+ 20 0 18664 11052 9248 S 0.0 0.1 0:00.26 systemd-resolve
1 root 20 0 24480 10460 7732 S 0.0 0.1 0:00.54 systemd
460 gdr 20 0 15816 9052 7476 S 0.0 0.1 0:00.06 systemd
3092 root 20 0 10772 8300 7148 S 0.0 0.1 0:00.02 sshd
311 root 20 0 28272 8104 6492 S 0.0 0.0 0:00.15 systemd-udevd
319 systemd+ 20 0 14920 7764 6860 S 0.0 0.0 0:00.04 systemd-network
331 root 20 0 309164 7504 6524 S 0.0 0.0 0:00.04 systemd-logind
445 root 20 0 8800 5800 5112 S 0.0 0.0 0:00.00 sshd
467 gdr 20 0 8644 5528 3728 S 0.0 0.0 0:00.05 bash
3095 gdr 20 0 8368 5168 3612 S 0.0 0.0 0:00.04 bash
3094 gdr 20 0 10772 5008 3856 S 0.0 0.0 0:00.01 sshd
330 dbus 20 0 7296 4372 3740 S 0.0 0.0 0:00.03 dbus-daemon
447 root 20 0 6796 4284 3616 S 0.0 0.0 0:00.01 login
3120 gdr 20 0 10376 3792 3040 R 0.0 0.0 0:00.02 top
461 gdr 20 0 27000 2700 8 S 0.0 0.0 0:00.00 (sd-pam)
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_gp
4 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_par_gp
6 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/0:0H-kblockd
8 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 mm_percpu_wq
9 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
10 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcuc/0
11 root -2 0 0 0 0 I 0.0 0.0 0:00.20 rcu_preempt
12 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcub/1
13 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
14 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/0
15 root 20 0 0 0 0 I 0.0 0.0 0:00.07 kworker/0:1-events
16 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/0
17 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/1
18 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/1
19 root rt 0 0 0 0 S 0.0 0.0 0:00.22 migration/1
20 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcuc/1
21 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1
23 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/1:0H-events_highpri
24 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/2
25 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/2
26 root rt 0 0 0 0 S 0.0 0.0 0:00.22 migration/2
27 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcuc/2
28 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/2
30 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/2:0H-kblockd
31 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/3
32 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/3
33 root rt 0 0 0 0 S 0.0 0.0 0:00.22 migration/3
34 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcuc/3
35 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/3
36 root 20 0 0 0 0 I 0.0 0.0 0:00.00 kworker/3:0-events
37 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker/3:0H-events_highpri
38 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/4
39 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_inject/4
40 root rt 0 0 0 0 S 0.0 0.0 0:00.22 migration/4
41 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcuc/4
42 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/4I know memory monitoring can be approximative, but this seems off, all of the processes are using about 50% of the reported memory usage.
I also made sure not to monitor cached files, by doing a simple
findon another drive. The reported cache was bigger, but not the memory reading, so this isn't a "linuxatemyram.com"
What got me worried is that on other hardwares, the same configuration has a footprint of ~100MB, and all of it can be attributed to the running processes.
Any help or explanation is appreciated, thanks!
Last edited by Gdr- (2021-01-25 06:45:47)
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#2 2021-01-24 18:26:52
- Head_on_a_Stick
- Member
- From: The Wirral
- Registered: 2014-02-20
- Posts: 9,003
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Re: [Solved] Absurdly high memory usage on a base install
This is completely normal for a 16GiB machine, use ps_mem to see a full breakdown (it will give a lower figure). On my 16GiB system even a musl libc distribution still hovers around 140MiB used at the bare console. OpenBSD is significantly lighter if that's what you want — I see under 100MiB at the graphical desktop (dwm) for that operating system on the same hardware
Jin, Jîyan, Azadî
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#3 2021-01-24 18:58:25
- Gdr-
- Member
- Registered: 2021-01-24
- Posts: 2
Re: [Solved] Absurdly high memory usage on a base install
This is completely normal for a 16GiB machine, use ps_mem to see a full breakdown (it will give a lower figure). On my 16GiB system even a musl libc distribution still hovers around 140MiB used at the bare console. OpenBSD is significantly lighter if that's what you want — I see under 100MiB at the graphical desktop (dwm) for that operating system on the same hardware
Oh okay, thanks for the clarification. If this normal then there's nothing to worry about. Thanks again!
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#4 2021-01-24 23:30:20
- 2ManyDogs
- Forum Fellow
- Registered: 2012-01-15
- Posts: 4,648
Re: [Solved] Absurdly high memory usage on a base install
Please remember to mark your thread [SOLVED] (edit the title of your first post).
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